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  1. EVOLUTION OF THE GALIUM MULTIFLORUM COMPLEX IN WESTERN NORTH AMERICA: I. DIPLOIDS AND POLYPLOIDS IN THIS DIOECIOUS GROUP
    By: Ehrendorfer, Friedrich
    Type: Article
    In: Madroño
    Volume: 16
    Date: 1961
    Page Range: 109--122
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  2. New and Critical Taxa of Rubia and Galium (Rubiaceae, Rubieae) for the Flora of China
    By: Ehrendorfer, Friedrich
    Type: Article
    In: Novon: A Journal For Botanical Nomenclature
    Volume: 20
    Date: 2010
    Page Range: 268--277
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  3. Phylogeny of the Rubiaceae-Rubioideae, in Particular the Tribe Rubieae: Evidence from a Non-Coding Chloroplast DNA Sequence
    By: Natali, Alessandro - Manen, Jean-Francois - Ehrendorfer, Friedrich
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 82
    Date: 1995
    Page Range: 428--439
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